Convert Adaptive Multi-Rate Audio (.amr) to Android Audio (.android-audio) online for free. Fast, secure audio conversion with no watermarks or registration.
Upload your .amr file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .m4a file when it's ready.
AMR files are the raw output of many Android voice recorders and phone-call-recording apps, but the bare .amr extension is not always handled well by Android's built-in media player or Google Files. The Android Audio preset converts AMR into an optimized AAC-in-M4A file tuned for Android playback — correct sample rate, channel layout, and container that Google's media framework processes flawlessly.
Although Android technically supports AMR decoding, real-world behavior varies between manufacturers and OS versions. Samsung, Xiaomi, and Pixel devices may each handle .amr files differently in their default music apps. Converting to an Android-optimized audio format eliminates these inconsistencies and gives you a file that plays reliably through Google Files, Samsung Music, and every third-party player on the Google Play Store.
The conversion decodes AMR to PCM and re-encodes to AAC at 128 kbps (stereo) or 64 kbps (mono), wrapped in an M4A container with appropriate Android-compatible metadata atoms. The output is tuned for Android's MediaCodec AAC decoder, ensuring gapless playback and lock-screen controls.
AAC at 64-128 kbps is far more capable than AMR's 12.2 kbps ceiling. The conversion preserves everything the AMR recording captured and packages it in a codec that Android handles smoothly. Voice clarity will match the original.
| Device | AMR | Android Audio |
|---|---|---|
| Windows PC | Partial | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Partial |
| Web Browser | No |
Resolution: N/A
Bitrate: 320 kbps
OGG Vorbis preferred
Resolution: N/A
Bitrate: 256 kbps
AAC format required
Resolution: N/A
Bitrate: 128 kbps
Lossless FLAC/WAV for best quality
Resolution: N/A
Bitrate: 128 kbps
MP3 mono for spoken word
Converting AMR to Android Audio ensures your voice recordings play without issues on any Android device, regardless of manufacturer or OS version.
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| No |
| Feature | AMR | Android Audio |
|---|---|---|
| Full Name | Adaptive Multi-Rate Audio | Android Compatible Audio |
| Extension | .amr | .m4a |
| Best For | Speech optimized | Android optimized |